Table 2.
Univariate analysis for risk factors of colorectal cancer in the Korean Multicenter Cancer Cohort, 1993 to 2005.
| Statistics | HR (95% CI) | P value | |
| Age (yr) | 54.00 ± 13.89 | 1.03 (1.02, 1.05) | <.0001 |
| Age (yr) | |||
| <55 | 5600 (48.14%) | 1 | |
| ≥55 | 6032 (51.86%) | 1.92 (1.34, 2.76) | .0004 |
| Sex | |||
| Men | 4688 (40.30%) | 1 | |
| Women | 6944 (59.70%) | 0.55 (0.39, 0.77) | .0006 |
| Formal education | |||
| No | 2276 (19.64%) | 1 | |
| Yes | 9310 (80.36%) | 0.74 (0.50, 1.09) | .126 |
| Moderate physical activity (h/wk) | |||
| <7 | 7614 (66.65%) | 1 | |
| ≥7 | 3810 (33.35%) | 1.02 (0.71, 1.47) | .918 |
| Body mass index (kg/m2) | |||
| <25 | 7401 (63.63%) | 1 | |
| ≥25 | 4231 (36.37%) | 1.09 (0.77, 1.55) | .625 |
| Alcohol consumption history | |||
| No | 6432 (55.83%) | 1 | |
| Yes | 5088 (44.17%) | 1.65 (1.17, 2.32) | .004 |
| Cigarette smoking history | |||
| No | 7208 (62.37%) | 1 | |
| Yes | 4348 (37.63%) | 1.50 (1.06, 2.12) | .021 |
Numbers that do not add up to 11,632 are attributable to missing data.
HR, hazard ratio.